Commit ac4c0538 authored by unknown's avatar unknown
Browse files

Proposed fix for bug #5003 (subselect with MIN() and LIKE crashes server) 

We have next problem here:
active_index is wrong in the subselect's handler on the second val_int() call.
Optimizer sees that we can use index-read for that kind of condition,
and matching_cond() (sql/opt_sum.cc) doesn't. I suspect, proper solution is
to add appropriate code to the matching_cond() but now just added
missed initialization.


mysql-test/r/subselect.result:
  Appropriate test result
mysql-test/t/subselect.test:
  Test case added
sql/records.cc:
  index's initialization added
parent 8f68a9eb

mysql-test/r/subselect.result

+10 −0
Original line number Diff line number Diff line
@@ -1912,3 +1912,13 @@ a 
1

2

drop table t1,t2;

CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin);

CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel);

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000001','601','D0000000001','I0000000001');

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000002','602','D0000000001','I0000000001');

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000003','603','D0000000001','I0000000001');

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000004','101','D0000000001','I0000000001');

SELECT `IZAVORGANG_ID` FROM t1 WHERE `KUERZEL` IN(SELECT MIN(`KUERZEL`)`Feld1` FROM t1 WHERE `KUERZEL` LIKE'601%'And`IZAANALYSEART_ID`='D0000000001');

IZAVORGANG_ID

D0000000001

drop table t1;

mysql-test/t/subselect.test

+12 −0
Original line number Diff line number Diff line
@@ -1235,3 +1235,15 @@ select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 
drop table t1,t2;





#

# BUG#5003 - like in subselect

#

CREATE TABLE t1(`IZAVORGANG_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`KUERZEL` VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_bin,`IZAANALYSEART_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin,`IZAPMKZ_ID` VARCHAR(11) CHARACTER SET latin1 COLLATE latin1_bin);

CREATE INDEX AK01IZAVORGANG ON t1(izaAnalyseart_id,Kuerzel);

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000001','601','D0000000001','I0000000001');

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000002','602','D0000000001','I0000000001');

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000003','603','D0000000001','I0000000001');

INSERT INTO t1(`IZAVORGANG_ID`,`KUERZEL`,`IZAANALYSEART_ID`,`IZAPMKZ_ID`)VALUES('D0000000004','101','D0000000001','I0000000001');

SELECT `IZAVORGANG_ID` FROM t1 WHERE `KUERZEL` IN(SELECT MIN(`KUERZEL`)`Feld1` FROM t1 WHERE `KUERZEL` LIKE'601%'And`IZAANALYSEART_ID`='D0000000001');

drop table t1;

sql/records.cc

+3 −0
Original line number Diff line number Diff line
@@ -101,6 +101,9 @@ void init_read_record(READ_RECORD *info,THD *thd, TABLE *table, 
  else if (select && select->quick)

  {

    DBUG_PRINT("info",("using rr_quick"));



    if (!table->file->inited)

      table->file->ha_index_init(select->quick->index);

    info->read_record=rr_quick;

  }

  else if (table->sort.record_pointers)